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Over [174]
3 years ago
7

Black holes are formed when stars lose gas to burn, form a red super giant, cool down, then becomes so dense-?

Physics
1 answer:
ruslelena [56]3 years ago
3 0

Answer:

D the star explodes

Explanation:

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After 5 seconds the stone will have fallen 49 m
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I am currently studying about spectrums, difraction Gratings, and many other spectrum. So my question is: What should the Spectr
saveliy_v [14]
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3 years ago
To test the performance of its tires, a car
Rom4ik [11]

The coefficient of static friction is 0.222

Explanation:

In order for the car to remain in circular motion, the frictional force must be able to provide the necessary centripetal force. Therefore, the car will start skidding when the two forces are equal:

\mu mg=m\frac{v^2}{r}

where the term on the left is the frictional force, while the term on the right is the centripetal force, and where

\mu is the coefficient of static friction

m is the mass of the car

g is the acceleration of gravity

v is the speed of the car

r is the radius of the track

In this problem, we have:

r = 564 m

v = 35 m/s

g=9.8 m/s^2

And re-arranging the equation for \mu, we can find the coefficient of static friction:

\mu = \frac{v^2}{gr}=\frac{35^2}{(9.8)(564)}=0.222

Learn more about friction:

brainly.com/question/6217246

brainly.com/question/5884009

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#LearnwithBrainly

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3 years ago
The velocity of sound apparatus is used in an investigation to determine the frequency of an unknown tuning fork. The temperatur
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Answer:

Explanation:

The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves: vw = fλ, where vw is the speed of sound, f is its frequency, and λ is its wavelength.

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What kind of medium does ocean waves have
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Ocean waves propagate through the medium called 'sea water'.
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3 years ago
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